CN215393985U

CN215393985U - Follow-up rotating disc tool for milling inner back arc of steam passage of large-sized moving blade

Info

Publication number: CN215393985U
Application number: CN202121906188.8U
Authority: CN
Inventors: 吉鲲跃
Original assignee: Nantong Zhongneng Machinery Co ltd
Current assignee: Nantong Zhongneng Machinery Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-01-04
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a follow-up rotating disc tool for milling inner and back arcs of a steam passage of a large-scale moving blade, which structurally comprises a blade root fixing seat and a blade shroud fixing seat, wherein the blade root fixing seat is rotationally arranged on a machine tool, the blade shroud fixing seat is fixedly arranged on the machine tool, a blade root thimble is arranged on the blade root fixing seat, a blade root fixing groove is arranged on the blade root fixing seat, a rotatable rotating disc is arranged on the blade shroud fixing seat, a rotatable blade shroud thimble is arranged at the central position of the rotating disc, the blade shroud thimble is used as the central line, the rotating disc is provided with a detachable blade shroud fixing groove, and the theoretical machining central line pre-calibrated by the blade shroud thimble and the blade root thimble coincides with the blade central line.

Description

Follow-up rotating disc tool for milling inner back arc of steam passage of large-sized moving blade

The technical field is as follows:

the utility model relates to the technical field of production and processing of turbine blades, in particular to a follow-up rotating disc tool for milling inner and back arcs of a steam passage of a large-sized moving blade.

Background art:

in various types of turbine blades, large moving blades often appear, the length of a steam passage of the large moving blades exceeds 700mm, the total length of a machined blank exceeds 840mm, the large moving blades with the length of the steam passage have poor rigidity during milling, low work efficiency, large vibration quantity of workpieces during feed, poor stability and influence on the final forming quality of the blades.

The utility model has the following contents:

the utility model aims to provide a follow-up rotary table tool for milling inner and back arcs of a steam passage of a large-sized moving blade, which solves one or more of the problems in the prior art.

The utility model provides a follow-up rotating disc tool for milling inner and back arcs of a steam passage of a large-sized moving blade, which structurally comprises a blade root fixing seat rotationally arranged on a machine tool and a blade crown fixing seat fixed on the machine tool, and is characterized in that: the blade root fixing seat is provided with a blade root thimble, the blade root thimble is used as a central line, the blade root fixing seat is provided with a blade root fixing groove, the blade shroud fixing seat is provided with a rotatable turntable, the central position of the turntable is provided with a rotatable blade shroud thimble, the turntable is provided with a detachable blade shroud fixing groove, and the theoretical machining central line pre-calibrated by the blade shroud thimble and the blade root thimble coincides with the blade central line.

Further, above-mentioned blade root fixed slot and blade root fixing base integrated into one piece are U type spare, and the upper and lower two sides of blade root fixed slot all is equipped with a plurality of first clamp bolts.

Furthermore, the junction of above-mentioned carousel and leaf shroud fixing base is equipped with planar bearing, and the center of leaf shroud fixing base, the center of plane bearing frame and the center of carousel run through in proper order has radial bearing, and radial bearing's one end extends in the outside of leaf shroud fixing base and is fixed with the gravity piece, and radial bearing's the other end extends in the outside of carousel and is equipped with the draw-in groove, and the inside at the draw-in groove is fixed in the insertion of leaf shroud thimble.

Further, centering on the central line with the leaf shroud thimble, be equipped with the stationary plane of two symmetries on the carousel, two terminal surfaces of leaf shroud fixed slot are equipped with two splint that are parallel to each other, and it has a plurality of second clamping bolt to distribute on the splint, and the tip of splint is equipped with the vertically fixed plate, has seted up waist shape hole on the fixed plate, is equipped with the fixed orifices on the fixed surface, passes through fastening bolt fixed connection between waist shape hole and the fixed orifices.

The utility model has the beneficial effects that:

1. the utility model provides a follow-up rotary table tool for milling inner back arcs of steam passages of large-scale moving blades, which is characterized in that long squares at the positions of blade shrouds and blade roots are in different inclination angles in space, when the long squares of the blade shrouds are fixed, a long square at the end of the blade shroud of the large-scale moving blade is jacked on a blade shroud thimble by detaching a blade shroud fixing groove from a rotary table, and the position of the rotary table is rotated, so that the long surface of the long square at the end of the blade shroud can be clamped in the blade shroud fixing groove when the blade shroud fixing groove is reinstalled on the rotary table, and further the subsequent blade shroud fixing groove 5 can conveniently clamp and fix the long surface of the long square at the end of the blade shroud.

2. The utility model provides a follow-up rotating disc tool for milling inner back arcs of steam passages of large-scale moving blades, wherein after the large-scale moving blades are jacked on a blade shroud thimble and a blade root thimble, the theoretical machining center lines of the blade shroud thimble and the blade root thimble, which are calibrated in advance, are superposed with the blade center line, finally, a blade shroud end rectangular block is clamped and fixed inside a blade shroud fixing groove, and a blade root end rectangular block is clamped and fixed inside a blade root fixing groove.

3. The utility model provides a follow-up rotating disc tool for milling inner and back arcs of a steam passage of a large-scale moving blade, wherein when a machine tool mills the large-scale moving blade, power on the machine tool drives a blade root fixing seat to rotate, at the moment, a blade crown thimble and a rotating disc synchronously rotate at the position of the blade crown fixing seat, so that the machine tool can mill the steam passage of the large-scale moving blade, and in view of the fact that the large-scale moving blade is longer in length, the large-scale moving blade is clamped between the blade root thimble and the blade crown thimble, and a blade root and a blade crown of the large-scale moving blade are respectively clamped and fixed in a blade crown fixing groove and a blade root fixing groove at the same time, the clamping and fixing firmness of the large-scale moving blade between the blade crown fixing seat and the blade root fixing seat is improved, and the milling and processing stability of the large-scale moving blade is further ensured.

Description of the drawings:

fig. 1 is a schematic side view of the present invention.

Fig. 2 is a cross-sectional view of the surface of the turntable of the present invention.

The specific implementation mode is as follows:

for the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

Fig. 1 to fig. 2 show a specific embodiment of the present invention, which includes a blade root fixing seat 1 rotatably disposed on a machine tool and a blade shroud fixing seat 2 fixed on the machine tool, the blade root fixing seat 1 is provided with a blade root thimble 11, the blade root thimble 11 is used as a center line, the blade root fixing seat 1 is provided with a blade root fixing groove 3, the blade shroud fixing seat 2 is provided with a rotatable turntable 4, the center of the turntable 4 is provided with a rotatable blade shroud thimble 41, the blade shroud thimble 41 is used as a center line, the turntable 4 is provided with a detachable blade shroud fixing groove 5, and a theoretical machining center line pre-calibrated by the blade shroud thimble 41 and the blade root thimble 11 coincides with a blade center line.

In the present invention, the length of the blank of the large-sized moving blade 100 generally reaches more than 840mm, and both the blade root and the blade shroud of the large-sized moving blade 100 have rectangular blocks which are convenient to clamp and fix, and in view of the special shape of the blade, the rectangular blocks at the blade shroud and blade root positions are at different inclination angles in space, and when the large-sized moving blade 100 is clamped and fastened on the machine tool: 1. the long square at the blade root end of the large-scale moving blade 100 is jacked on the blade root thimble 11 and inserted into the blade root fixing groove 3, when the long square at the blade root end is inserted into the blade root fixing groove 3, the long surface of the long square at the blade root end is clamped in the blade root fixing groove 3, so that the long surface of the long square at the blade root end can be conveniently clamped and fixed by the subsequent blade

root fixing groove

3, 2, in view of the fact that the long squares at the blade crown and the blade root are positioned at different inclination angles in space, when the long square at the blade crown is fixed, the blade crown fixing groove 5 needs to be firstly disassembled from the rotary disc 4, then the long square at the blade crown end of the large-scale moving blade 100 is jacked on the blade crown thimble 41, the position of the rotary disc 4 is rotated, the long surface of the long square at the blade crown end can be clamped in the blade crown fixing groove 5 when the blade crown fixing groove 5 is remounted on the rotary disc 4, and further the subsequent blade crown end long square can be conveniently clamped and fixed by the subsequent blade

crown fixing groove

5, 3. after the large-scale moving blade 100 is jacked on the blade shroud thimble 41 and the blade root thimble 11, the theoretical machining center line of the pre-calibration of the blade shroud thimble 41 and the blade root thimble 11 is overlapped with the blade center line, finally, the blade shroud end rectangular block is clamped and fixed in the blade shroud fixing groove 5, the blade root end rectangular block is clamped and fixed in the blade root fixing groove 3, in the clamping process of the blade shroud rectangular block and the blade root rectangular block, the clamping and fixing of the blade shroud and the blade root position are respectively limited by the blade shroud thimble 41 and the blade root thimble 11, and further, the position of the center line of the large-scale moving blade 100 is ensured not to change.

In the utility model, when the large-scale moving blade 100 is milled by a machine tool, the blade root fixing seat 1 is driven by power on the machine tool to rotate, at this time, the blade crown thimble 41 and the rotary table 4 synchronously rotate at the position of the blade crown fixing seat 2, so that the machine tool can mill the steam passage position of the large-scale moving blade 100, and in view of the long length of the large-scale moving blade 100, the large-scale moving blade 100 is clamped and fixed between the blade root thimble 11 and the blade crown thimble 41, and the blade root and the blade crown of the large-scale moving blade 100 are respectively clamped and fixed in the blade crown fixing groove 5 and the blade root fixing groove 3, so that the clamping and fixing firmness of the large-scale moving blade 100 between the blade crown fixing seat 2 and the blade root fixing seat 1 is improved, and the milling stability of the large-scale moving blade 100 is further ensured.

In the present invention, as a preferable scheme, the blade root fixing groove 3 and the blade root fixing seat 1 are integrally formed as a U-shaped member, and the upper and lower surfaces of the blade root fixing groove 3 are provided with a plurality of first clamping bolts 31.

In the utility model, the integral forming of the blade root fixing groove 3 and the blade root fixing seat 1 simplifies the integral structure of the U-shaped part, facilitates the installation between the blade root position and the blade root fixing seat 1, and when the blade root rectangular block is clamped and fixed in the blade root fixing groove 3, the first clamping bolt 31 is pressed against the long surface of the blade root rectangular block, so that the clamping and fixing of the blade root rectangular block in the blade root fixing groove 3 are realized.

In the present invention, as a preferable scheme, a flat bearing 101 is disposed at a connection position of the rotating disk 4 and the shroud fixing seat 2, a radial bearing 102 sequentially penetrates through a center of the shroud fixing seat 2, a center of a seat of the flat bearing 101, and a center of the rotating disk 4, one end of the radial bearing 102 extends outside the shroud fixing seat 2 and is fixed with a gravity block 103, the other end of the radial bearing 102 extends outside the rotating disk 4 and is provided with a clamping groove 104, and the shroud ejector pin 41 is inserted and fixed inside the clamping groove 104.

In the utility model, the rotation of the rotating disc 4 on the shroud fixing seat 2 is realized by the plane bearing 101, the radial bearing 102 is arranged to realize the free rotation of the shroud thimble 41, and the setting of the gravity block 103 improves the stability of the rotation of the shroud thimble 41.

In the utility model, as a preferable scheme, two symmetrical fixing surfaces 6 are arranged on the turntable 4 by taking the center line of the blade crown thimble 41, two parallel clamping plates 51 are arranged on two end surfaces of the blade crown fixing groove 5, a plurality of second clamping bolts 52 are distributed on the clamping plates 51, a vertical fixing plate 53 is arranged at the end part of each clamping plate 51, a waist-shaped hole 54 is formed in each fixing plate 53, a fixing hole 61 is formed in each fixing surface 6, and the waist-shaped hole 54 and the fixing hole 61 are fixedly connected through a fastening bolt.

In the utility model, when the long surface of the blade shroud rectangular block is clamped inside the blade shroud fixing groove 5, the fixing position between the waist-shaped hole 54 and the fixing hole 61 is adjusted according to the thickness of the blade shroud rectangular block, so that the blade shroud rectangular block with different thicknesses can be flexibly adapted, and when the blade shroud rectangular block is clamped and fixed inside the blade shroud fixing groove 5 subsequently, the second clamping bolt 52 is pressed against the long surface of the blade shroud rectangular block, so that the clamping and fixing of the blade shroud rectangular block inside the blade shroud fixing groove 5 are realized.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a carousel frock is walked in follow-up of back arc in large-scale moving blade milling steam passage, its structure is including rotating blade root fixing base (1) of setting on the lathe and fixing blade shroud fixing base (2) on the lathe, its characterized in that: be equipped with blade root thimble (11) on blade root fixing base (1), with blade root thimble (11) are the central line, be equipped with blade root fixed slot (3) on blade root fixing base (1), be equipped with rotatable carousel (4) on blade shroud fixing base (2), the central point of carousel (4) puts and is equipped with rotatable blade shroud thimble (41), with blade shroud thimble (41) are the central line, be equipped with detachable blade shroud fixed slot (5) on carousel (4), blade shroud thimble (41) with theoretical processing central line and the coincidence of blade central line that blade root thimble (11) calibrated in advance.

2. The follow-up rotary table tool for the large-scale moving blade steam-milling channel inner-back arc according to claim 1, wherein the follow-up rotary table tool comprises: blade root fixed slot (3) with blade root fixing base (1) integrated into one piece is U type spare, the upper and lower two sides of blade root fixed slot (3) all are equipped with a plurality of first clamping bolt (31).

3. The follow-up rotary table tool for the large-scale moving blade steam-milling channel inner-back arc according to claim 1, wherein the follow-up rotary table tool comprises: carousel (4) with the junction of leaf crown fixing base (2) is equipped with flat bearing (101), the center of leaf crown fixing base (2), the center of flat bearing (101) seat and the center of carousel (4) has run through in proper order and has radial bearing (102), the one end of radial bearing (102) is extended the outside of leaf crown fixing base (2) and be fixed with gravity piece (103), the other end of radial bearing (102) extends and is in the outside of carousel (4) and be equipped with draw-in groove (104), leaf crown thimble (41) insert to be fixed the inside of draw-in groove (104).

4. The follow-up rotary table tool for the large-scale moving blade steam milling passage inner back arc according to claim 3, wherein the follow-up rotary table tool comprises: with leaf crown thimble (41) is to the central line, be equipped with stationary plane (6) of two symmetries on carousel (4), two terminal surfaces of leaf crown fixed slot (5) are equipped with two splint (51) that are parallel to each other, it has a plurality of second clamping bolt (52) to distribute on splint (51), the tip of splint (51) is equipped with vertically fixed plate (53), waist shape hole (54) have been seted up on fixed plate (53), be equipped with fixed orifices (61) on stationary plane (6), waist shape hole (54) with through fastening bolt fixed connection between fixed orifices (61).